IF and then function in R

[nanas]

Hi All,

I want to write IF function for string variable. if it matches i should create new column.

If then else function.

Am not able to write code please help me.

[FJCC]

You have given us very little information to work with. Please make a Reproducible Example if the code below does not fix your problem. To learn about reproducible examples, you can read this post:

FAQ: How to do a minimal reproducible example ( reprex ) for beginners

A minimal reproducible example consists of the following items: A minimal dataset, necessary to reproduce the issue The minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and including the necessary information on the used packages. Let's quickly go over each one of these with examples: Minimal Dataset (Sample Data) You need to provide a data frame that is small enough to be (reasonably) pasted on a post, but big enough to reproduce your issue. Let's say, as an example, that you are working with the iris data frame head(iris) #> Sepal.Length Sepal.Width Petal.Length Petal.Width Species #> 1 5.1 3.5 1.4 0.…

Let's assume you have a data frame named DF and a variable named MyVar. This code makes a new column in DF named alpha with a value of 1 in every row if MyVar is equal to alpha.

if (MyVar == "alpha") {
  DF$alpha <- 1
}